Shell help

Don DeGregori

This script works good.
Using example from Omega2 Documents, Communicating with 1-wire devices.

#!/bin/ash
gpioctl dirin 2
insmod w1-gpio-custom bus0=0,2,0
while true
do
cat /sys/devices/w1_bus_master1/28-0115901482ff/w1_slave
awk -F= '/t=/ {printf "%.03f\n", $2/1000}' /sys/devices/w1_bus_master1/28-0115901482ff/w1_slave
sleep 5
done

With a result like this
47 01 4b 46 7f ff 0c 10 6c : crc=6c YES
47 01 4b 46 7f ff 0c 10 6c t=20437
20.437

How can I print only the temperature of 20.437?

Thanks

Chris Stratton

Possibly leave out the cat line, or if that has necessary side effects (like triggering an actual operation), pipe it to /dev/null

Don DeGregori

@Chris-Stratton
Thanks Chris. The second solution worked. >.dev/null